moment = 2026-11-14T01:17:05.123456789+05:30[Asia/Kolkata]  (a Saturday, day 318 of the year)

yyyy    -> 2026
yy      -> 26
uuuu    -> 2026
M       -> 11
MM      -> 11
MMM     -> Nov
MMMM    -> November
MMMMM   -> N
d       -> 14
dd      -> 14
D       -> 318
DDD     -> 318
E       -> Sat
EEEE    -> Saturday
EEEEE   -> S
e       -> 7
ee      -> 07
H       -> 1
HH      -> 01
h       -> 1
hh      -> 01
k       -> 1
K       -> 1
a       -> AM
B       -> in the morning
BBBB    -> in the morning
m       -> 17
mm      -> 17
s       -> 5
ss      -> 05
S       -> 1
SSS     -> 123
SSSSSS  -> 123456
n       -> 123456789
A       -> 4625123
G       -> AD
Q       -> 4
QQQ     -> Q4
w       -> 46
W       -> 2
z       -> IST
zzzz    -> India Standard Time
VV      -> Asia/Kolkata
O       -> GMT+5:30
OOOO    -> GMT+05:30
X       -> +0530
XXX     -> +05:30
x       -> +0530
xxx     -> +05:30
Z       -> +0530
ZZZZ    -> GMT+05:30
ZZZZZ   -> +05:30

== the four hour letters, at midnight, 01:00, noon and 13:00 ==
time   H   h   k   K  
00:17  0   12  24  0  
01:17  1   1   1   1  
12:17  12  12  12  0  
13:17  13  1   13  1