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Calendar Wiki
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Quick comparison of calendars with 13 months of 28 days each
Calendar Leap item Leap position Leap rule Naming Year start 1st day Days without week Days without month
28/293 day flexible 294th day numeric Dec solstice ? 0 0
Abysmal day end 4:128 numeric Dec solstice Sat 1+ 1+
13 day end 4:100:400 numeric Dec solstice ? ? ?
COIN day 2nd month 4:100:400 numeric Jan01 Mon 1+ 0
Filianic day end ? feminist Mar equinox Sun 0 0
Intl. week end ISO numeric W01-1 Mon 0 0
Intl. Fixed day end 4:100:400 + 07 “Sol” Jan01 Sun 1+ 1+
Jaktober day start 4:33 + 13 “Jaktober” Dec solstice Mon 1+ 1+
Kluznicki day end astronomic + 07 “Aten” Dec solstice Mon 1+ 0
Markels day end ? zodiac Sagittarius Sun 1+ +
Modern Christian day end 4:33:293 Christian ? Sun 1+ 1+
Pax week almost end %6 & 99 & 100:400 + 12 “Columbus” W01-1 – 1 Sun 0 (7)
Positivist day end 4:100:400 philosophic 1789-01-01 Mon 1+ 0
Riparian day end ? traditional + changes Mar01 ? 0 0
Sentinel week middle 6:50 lessons Mar equinox Sun 0 0
Sol day end 4:100:400 + 07 “Sol” Jan01 Sun 0 0
Nearest-Monday 13X28 week end Nearest Monday (arithmetical) numeric, Esperanto Dec solstice Mon 0
Terran Comp. day end 4:128 numeric Dec solstice ? 1+ 1+
Leap-Month month flexible 294th month numeric Esperanto Jan Mon 0 0
Todd’s day end ? zodiac ? ? ? 1+

All items (29)

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