Fix a few issues found during fine-tuning (#2582)

ming030890

2025-07-04 a750595594321833b48dc19798eed66876a100b4

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cst    CST
c.s.t    CST
cet    CET
c.e.t    CET
pst    PST
p.s.t    PST
est    EST
e.s.t    EST
pt    PT
p.t    PT
et    ET
e.t    ET
gmt    GMT
g.m.t    GMT