diff --git a/_events/20181114-openspace.markdown b/_events/20181114-openspace.markdown
index d4faf6b1e54e39d9de56d80c46dbc76b332f2d60..c0b58a908f545c2df500ce6442029dbe4d75297c 100644
--- a/_events/20181114-openspace.markdown
+++ b/_events/20181114-openspace.markdown
@@ -2,8 +2,8 @@
 layout: [eventcal]
 title:  "Open Space/Chaostreff"
 image: "/assets/geloet.jpg"
-eventdate:   2018-11-14 19:00:00 +0200
-eventend:   2018-11-14 23:59:59 +0200
+eventdate:   2018-11-14 19:00:00 +0100
+eventend:   2018-11-14 23:59:59 +0100
 #https://www.uuidgenerator.net/
 uid: efac1ad7-7d92-4596-9b4e-cebe930e5fb1
 contact: info@chaotikum.org
diff --git a/_events/20181121-openspace.markdown b/_events/20181121-openspace.markdown
index d402a7a8a33720dd6ae17344b52a2723501c726f..a39194cd3aa3a44c6bc149e54fb155273466e5ad 100644
--- a/_events/20181121-openspace.markdown
+++ b/_events/20181121-openspace.markdown
@@ -2,8 +2,8 @@
 layout: [eventcal]
 title:  "Open Space/Chaostreff"
 image: "/assets/geloet.jpg"
-eventdate:   2018-11-21 19:00
-eventend:   2018-11-21 23:59
+eventdate:   2018-11-21 19:00:00 +0100
+eventend:   2018-11-21 23:59:00 +0100
 #https://www.uuidgenerator.net/
 uid: a8615846-9342-425e-8fa9-5ebfebc2c12d
 contact: info@chaotikum.org
diff --git a/_events/20181122-osm.markdown b/_events/20181122-osm.markdown
index 9d76452e60db34fc06a4628e141c8722873507fd..0fb42236620706ddcaa4724187a70d04df7c7dc9 100644
--- a/_events/20181122-osm.markdown
+++ b/_events/20181122-osm.markdown
@@ -2,8 +2,8 @@
 layout: [eventcal]
 title:  "116 OSM-Stammtisch"
 image: "/assets/osmback.png"
-eventdate:   2018-11-22 19:00
-eventend: 2018-11-22 22:00
+eventdate:   2018-11-22 19:00:00 +0100
+eventend: 2018-11-22 22:00:00 +0100
 #https://www.uuidgenerator.net/
 uid: 524e96c2-0a2c-4f5e-b5df-351cee65bd9b
 contact: luebeck@lists.openstreetmap.de
diff --git a/_events/20181124-loetworkshop.markdown b/_events/20181124-loetworkshop.markdown
index c5310da68951d5c59313e13f56c21d47b6ef4a60..8e341b903f23f47f3613927e6eae0f8c27431aac 100644
--- a/_events/20181124-loetworkshop.markdown
+++ b/_events/20181124-loetworkshop.markdown
@@ -2,8 +2,8 @@
 layout: [eventcal]
 title:  "Löt-Workshop im Nobreakspace"
 image: "/assets/geloet.jpg"
-eventdate:   2018-11-24 14:00
-eventend:    2018-11-24 18:00
+eventdate:   2018-11-24 14:00:00 +0100
+eventend:    2018-11-24 18:00:00 +0100
 pretix: https://pretix.chaotikum.org/chaotikum/loet1/
 eventics: https://pretix.chaotikum.org/chaotikum/loet1/ical
 #https://www.uuidgenerator.net/
diff --git a/_events/20181128-openspace.markdown b/_events/20181128-openspace.markdown
index 9e07126e24e708e13dfe080b79bf46792c29283c..3995a80f99dd584853d6a3cb10abe0cb00fa1270 100644
--- a/_events/20181128-openspace.markdown
+++ b/_events/20181128-openspace.markdown
@@ -2,8 +2,8 @@
 layout: [eventcal]
 title:  "Open Space/Chaostreff"
 image: "/assets/geloet.jpg"
-eventdate:   2018-11-28 19:00
-eventend:   2018-11-28 23:59
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+eventend:   2018-11-28 23:59:00 +0100
 #https://www.uuidgenerator.net/
 uid: 268b8eb4-0011-4e6f-83e0-bc5aef94852a
 contact: info@chaotikum.org
diff --git a/_events/20181205-openspace.markdown b/_events/20181205-openspace.markdown
index c3fc6d5fdaa706a8bc504ce59bbd712019c4d786..c942eb2e44f9c43cd8b4f59e29b6b931d3ae0f57 100644
--- a/_events/20181205-openspace.markdown
+++ b/_events/20181205-openspace.markdown
@@ -2,8 +2,8 @@
 layout: [eventcal]
 title:  "Open Space/Chaostreff"
 image: "/assets/geloet.jpg"
-eventdate:   2018-12-05 19:00
-eventend:   2018-12-05 23:59
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 #https://www.uuidgenerator.net/
 uid: 54749afd-66cc-4f25-833d-bf76ce7d6bd2
 contact: info@chaotikum.org
diff --git a/_events/20181212-openspace.markdown b/_events/20181212-openspace.markdown
index 1627314f1d0a63d840ee3052e9531a1b80e5ce4e..301c09a0706a202f24771bdd0aace4d7a0f2928f 100644
--- a/_events/20181212-openspace.markdown
+++ b/_events/20181212-openspace.markdown
@@ -2,8 +2,8 @@
 layout: [eventcal]
 title:  "Open Space/Chaostreff"
 image: "/assets/geloet.jpg"
-eventdate:   2018-12-12 19:00
-eventend:    2018-12-12 23:59
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 #https://www.uuidgenerator.net/
 uid: 50c9b77e-464b-4f08-9bb3-39e383d1f7c7
 contact: info@chaotikum.org
diff --git a/_events/20181213-plenum.markdown b/_events/20181213-plenum.markdown
index c263d5a1b727007064c89ab985e22c09638afbc6..9c8a1ff7b0409f9170729bcd4a0005d35b8e5184 100644
--- a/_events/20181213-plenum.markdown
+++ b/_events/20181213-plenum.markdown
@@ -2,8 +2,8 @@
 layout: [eventcal]
 title:  "Plenum"
 image: "/assets/wall.png"
-eventdate:   2018-12-13 19:00
-eventend:   2018-12-13 22:00
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 #https://www.uuidgenerator.net/
 uid: 52a17b47-da33-450e-8bf6-51790bce2609
 contact: info@chaotikum.org
diff --git a/_events/20181219-openspace.markdown b/_events/20181219-openspace.markdown
index 7f8a0ca799a19af0b6f598aced121c7c474b08d2..eb362259225a7d4e5c5df8c87e0962f9a8a36494 100644
--- a/_events/20181219-openspace.markdown
+++ b/_events/20181219-openspace.markdown
@@ -2,8 +2,8 @@
 layout: [eventcal]
 title:  "Open Space/Chaostreff"
 image: "/assets/geloet.jpg"
-eventdate:   2018-12-19 19:00
-eventend:    2018-12-19 23:59
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 #https://www.uuidgenerator.net/
 uid: 89c5260e-7291-4289-9aa6-3481e0922dbe
 contact: info@chaotikum.org
diff --git a/_events/20190109-openspace.markdown b/_events/20190109-openspace.markdown
index 6774ebfdaf1865599ee33fb0670ae012bb28970b..195805ab61bd36ba5b274b246ad619bfd5205a72 100644
--- a/_events/20190109-openspace.markdown
+++ b/_events/20190109-openspace.markdown
@@ -2,8 +2,8 @@
 layout: [eventcal]
 title:  "Open Space/Chaostreff"
 image: "/assets/geloet.jpg"
-eventdate:   2019-01-09 19:00
-eventend:   2019-01-09 23:59
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 #https://www.uuidgenerator.net/
 uid: 6c8493c3-bd0b-4271-bc3a-cb9f1b5d93df
 contact: info@chaotikum.org
diff --git a/_events/20190110-plenum.markdown b/_events/20190110-plenum.markdown
index 2a7900b67825127410f699bb7f158854cb91fd53..0a29affe32b7b0c9f5374eff00d2280efea35be4 100644
--- a/_events/20190110-plenum.markdown
+++ b/_events/20190110-plenum.markdown
@@ -2,8 +2,8 @@
 layout: [eventcal]
 title:  "Plenum"
 image: "/assets/wall.png"
-eventdate:   2019-01-10 19:00
-eventend:   2019-01-10 22:00
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 #https://www.uuidgenerator.net/
 uid: 9a6a5f79-2a4e-42d5-ac89-bf43b5a2354d
 contact: info@chaotikum.org
diff --git a/_events/20190116-openspace.markdown b/_events/20190116-openspace.markdown
index 4eebc5a6997a09291d9230bfdb541823ade2bb99..11731532cd69fc5011594eabe4b62e72f00cc438 100644
--- a/_events/20190116-openspace.markdown
+++ b/_events/20190116-openspace.markdown
@@ -2,8 +2,8 @@
 layout: [eventcal]
 title:  "Open Space/Chaostreff"
 image: "/assets/geloet.jpg"
-eventdate:   2019-01-16 19:00
-eventend:    2019-01-16 23:59
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 #https://www.uuidgenerator.net/
 uid: abfa80ed-b422-4c22-96ad-442f8c5b763e
 contact: info@chaotikum.org
diff --git a/_events/20190123-openspace.markdown b/_events/20190123-openspace.markdown
index 877dfb1d7c18209bb9875f91b0ce96a11dc6d7f9..7ab39c58e318318a6713082f0e71ae92900d4a4d 100644
--- a/_events/20190123-openspace.markdown
+++ b/_events/20190123-openspace.markdown
@@ -2,8 +2,8 @@
 layout: [eventcal]
 title:  "Open Space/Chaostreff"
 image: "/assets/geloet.jpg"
-eventdate:   2019-01-23 19:00
-eventend:    2019-01-23 23:59
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 #https://www.uuidgenerator.net/
 uid: 9ca26271-d6fa-4f07-a81b-999d7e3d6b95
 contact: info@chaotikum.org
diff --git a/_events/20190124-osm.markdown b/_events/20190124-osm.markdown
index d67604799266843499af2add25ac116f5810c916..4dee53c06af5f6f45304a7e182e0adf7ab3b8f75 100644
--- a/_events/20190124-osm.markdown
+++ b/_events/20190124-osm.markdown
@@ -2,8 +2,8 @@
 layout: [eventcal]
 title:  "117 OSM-Stammtisch"
 image: "/assets/osmback.png"
-eventdate:   2019-01-24 19:00
-eventend: 2019-01-24 22:00
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 #https://www.uuidgenerator.net/
 uid: 7cefbee9-d90b-4293-84b9-26d48f79045c
 contact: luebeck@lists.openstreetmap.de
diff --git a/_events/20190130-openspace.markdown b/_events/20190130-openspace.markdown
index 0614309d0f09eb8f65038d604c1c3f5847101295..c3c37542b32671c0e5aa9f1258220d212771cb6f 100644
--- a/_events/20190130-openspace.markdown
+++ b/_events/20190130-openspace.markdown
@@ -2,8 +2,8 @@
 layout: [eventcal]
 title:  "Open Space/Chaostreff"
 image: "/assets/geloet.jpg"
-eventdate:   2019-01-30 19:00
-eventend:    2019-01-30 23:59
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 #https://www.uuidgenerator.net/
 uid: f772db8f-e748-458f-901e-dd9878f57978
 contact: info@chaotikum.org
diff --git a/_events/20190206-openspace.markdown b/_events/20190206-openspace.markdown
index 0170f46db93702ae923768e9d7533b2322716727..dcfa7f42e7358bcda4e397b75f8fd49d0ed030c3 100644
--- a/_events/20190206-openspace.markdown
+++ b/_events/20190206-openspace.markdown
@@ -2,8 +2,8 @@
 layout: [eventcal]
 title:  "Open Space/Chaostreff"
 image: "/assets/geloet.jpg"
-eventdate:   2019-02-06 19:00
-eventend:    2019-02-06 23:59
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 #https://www.uuidgenerator.net/
 uid: ad9985a2-cbd9-49a0-bbf7-87b82bc82e18
 contact: info@chaotikum.org
diff --git a/_events/20190213-openspace.markdown b/_events/20190213-openspace.markdown
index d8c6fa4601ce68cc2f338129853a0aac484ca60d..6b84701c73ea69f993dd0f82b356796779eb8cd3 100644
--- a/_events/20190213-openspace.markdown
+++ b/_events/20190213-openspace.markdown
@@ -2,8 +2,8 @@
 layout: [eventcal]
 title:  "Open Space/Chaostreff"
 image: "/assets/geloet.jpg"
-eventdate:   2019-02-13 19:00
-eventend:    2019-02-13 23:59
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 #https://www.uuidgenerator.net/
 uid: 0225e303-d1b9-4d63-b045-404422a3991e
 contact: info@chaotikum.org
diff --git a/_events/20190214-plenum.markdown b/_events/20190214-plenum.markdown
index 8928515e0d63e01dff2fed6bebcd39557639dacf..a83f2abd933609fb621ffec2d70e096fdef21e88 100644
--- a/_events/20190214-plenum.markdown
+++ b/_events/20190214-plenum.markdown
@@ -2,8 +2,8 @@
 layout: [eventcal]
 title:  "Plenum"
 image: "/assets/wall.png"
-eventdate:   2019-02-14 19:00
-eventend:   2019-02-14 22:00
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 #https://www.uuidgenerator.net/
 uid: 8f0753c4-cd1d-466b-bfd4-d7e4929295c8
 contact: info@chaotikum.org
diff --git a/_events/20190220-openspace.markdown b/_events/20190220-openspace.markdown
index 4386cdac4c2afba4aea70d5d0cc942f2df50a8a9..d42ca175d4b064167e6c152aaadaca0a2f5aad17 100644
--- a/_events/20190220-openspace.markdown
+++ b/_events/20190220-openspace.markdown
@@ -2,8 +2,8 @@
 layout: [eventcal]
 title:  "Open Space/Chaostreff"
 image: "/assets/geloet.jpg"
-eventdate:   2019-02-20 19:00
-eventend:    2019-02-20 23:59
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 #https://www.uuidgenerator.net/
 uid: e5b4eafc-148a-4ad9-a2d0-803d90f7c3d0
 contact: info@chaotikum.org
diff --git a/_events/20190227-openspace.markdown b/_events/20190227-openspace.markdown
index 8a26f0f07087abd20187aa5d3dd316d3dfdbd410..ef20ee6a18cb766b593f63f06899e0a477d8cba1 100644
--- a/_events/20190227-openspace.markdown
+++ b/_events/20190227-openspace.markdown
@@ -2,8 +2,8 @@
 layout: [eventcal]
 title:  "Open Space/Chaostreff"
 image: "/assets/geloet.jpg"
-eventdate:   2019-02-27 19:00
-eventend:    2019-02-27 23:59
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 #https://www.uuidgenerator.net/
 uid: 2fdfd4c9-9f04-4d45-b2cf-eae9f13de210
 contact: info@chaotikum.org
diff --git a/_events/20190228-osm.markdown b/_events/20190228-osm.markdown
index 5e3adfab07d02b35a452270c0753998c25c2fa0f..efec4cbfd4915dc4655ea42979bbf848ca0d344d 100644
--- a/_events/20190228-osm.markdown
+++ b/_events/20190228-osm.markdown
@@ -2,8 +2,8 @@
 layout: [eventcal]
 title:  "118 OSM-Stammtisch"
 image: "/assets/osmback.png"
-eventdate:   2019-02-28 19:00
-eventend: 2019-02-28 22:00
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 #https://www.uuidgenerator.net/
 uid: 9938425e-ae1a-4ae5-9ea5-cc121b5fa002
 contact: luebeck@lists.openstreetmap.de
diff --git a/_events/20190306-openspace.markdown b/_events/20190306-openspace.markdown
index 744eee947476a87ff00a07e47c6e22bbeff68715..305315cf9a9a73b25399aaa0d31fd8578cc80faa 100644
--- a/_events/20190306-openspace.markdown
+++ b/_events/20190306-openspace.markdown
@@ -2,8 +2,8 @@
 layout: [eventcal]
 title:  "Open Space/Chaostreff"
 image: "/assets/geloet.jpg"
-eventdate:   2019-03-06 19:00
-eventend:    2019-03-06 23:59
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 #https://www.uuidgenerator.net/
 uid: d6740a82-2f2f-4275-8863-db3dd67f6220
 contact: info@chaotikum.org
diff --git a/_events/20190313-openspace.markdown b/_events/20190313-openspace.markdown
index 1ee893e060908f872437140907a706db89987023..198628bc63b294dc1106500416940894b2f6a03c 100644
--- a/_events/20190313-openspace.markdown
+++ b/_events/20190313-openspace.markdown
@@ -2,8 +2,8 @@
 layout: [eventcal]
 title:  "Open Space/Chaostreff"
 image: "/assets/geloet.jpg"
-eventdate:   2019-03-13 19:00
-eventend:    2019-03-13 23:59
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 #https://www.uuidgenerator.net/
 uid: ddf7c1fc-c465-49a8-98e6-42d029321bcb
 contact: info@chaotikum.org
diff --git a/_events/20190314-plenum.markdown b/_events/20190314-plenum.markdown
index e2476688181b442fedcd434f2cf10f06f76ce10d..05b14f508e95551d9060db4845f9430548e8fbb3 100644
--- a/_events/20190314-plenum.markdown
+++ b/_events/20190314-plenum.markdown
@@ -2,8 +2,8 @@
 layout: [eventcal]
 title:  "Plenum"
 image: "/assets/wall.png"
-eventdate:   2019-03-14 19:00
-eventend:   2019-03-14 22:00
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 #https://www.uuidgenerator.net/
 uid: 272b39a3-c5d9-4a54-b001-11324f116ad3
 contact: info@chaotikum.org
diff --git a/_events/20190320-openspace.markdown b/_events/20190320-openspace.markdown
index d0d7c630421b868a76b3d9176a14b83aa10c9286..6c2dda70c9e8d1320628201134c7056bdd1a5a53 100644
--- a/_events/20190320-openspace.markdown
+++ b/_events/20190320-openspace.markdown
@@ -2,8 +2,8 @@
 layout: [eventcal]
 title:  "Open Space/Chaostreff"
 image: "/assets/geloet.jpg"
-eventdate:   2019-03-20 19:00
-eventend:    2019-03-20 23:59
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 #https://www.uuidgenerator.net/
 uid: 8d48871b-92bb-4dfb-ba98-68693ecdc399
 contact: info@chaotikum.org
diff --git a/_events/20190327-openspace.markdown b/_events/20190327-openspace.markdown
index bc220700be8b431c659591390b89e6f796cc69c3..ca9be597ce6451dce58ca956d0dbc38f1613a9ce 100644
--- a/_events/20190327-openspace.markdown
+++ b/_events/20190327-openspace.markdown
@@ -2,8 +2,8 @@
 layout: [eventcal]
 title:  "Open Space/Chaostreff"
 image: "/assets/geloet.jpg"
-eventdate:   2019-03-27 19:00
-eventend:    2019-03-27 23:59
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 #https://www.uuidgenerator.net/
 uid: 15fe3e71-cf48-4aa6-af15-d3a082e7c087
 contact: info@chaotikum.org
diff --git a/_events/20190328-osm.markdown b/_events/20190328-osm.markdown
index e3b02a1da04556920a05b98fa73f3e47d13eda05..fccc4189fd379f5d27f3991e4d8a41c095fe44c9 100644
--- a/_events/20190328-osm.markdown
+++ b/_events/20190328-osm.markdown
@@ -2,8 +2,8 @@
 layout: [eventcal]
 title:  "119 OSM-Stammtisch"
 image: "/assets/osmback.png"
-eventdate:   2019-03-28 19:00
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 #https://www.uuidgenerator.net/
 uid: 1904d9d2-df61-4d20-8171-d5087056b168
 contact: luebeck@lists.openstreetmap.de