Document chrono

doc/api.rst

@@ -415,18 +415,15 @@ For example::
 
   #include <fmt/chrono.h>
 
-  int main() {
+  std::time_t t = std::time(nullptr);
-    using namespace std::literals::chrono_literals;
+  // Prints "The date is 2020-11-07." (with the current date):
-    fmt::print("Default format: {} {}\n", 42s, 100ms);
+  fmt::print("The date is {:%Y-%m-%d}.", fmt::localtime(t));
-    fmt::print("strftime-like format: {:%H:%M:%S}\n", 3h + 15min + 30s);
-  }
 
-prints:
+  using namespace std::literals::chrono_literals;
-
+  // Prints "Default format: 42s 100ms":
-.. code:: none
+  fmt::print("Default format: {} {}\n", 42s, 100ms);
-
+  // Prints "strftime-like format: 03:15:30":
-   Default format: 42s 100ms
+  fmt::print("strftime-like format: {:%H:%M:%S}\n", 3h + 15min + 30s);
-   strftime-like format: 03:15:30
 
 Chrono format specifications are described in :ref:`chrono-specs`.
 

doc/syntax.rst

@@ -325,9 +325,11 @@ Literal chars are copied unchanged to the output. Precision is valid only for
 ``std::chrono::duration`` types with a floating-point representation type.
 
 *conversion_spec* are conversion specifiers documented in `strftime
-<http://en.cppreference.com/w/cpp/chrono/c/strftime>`_. Specifiers that have a
+<http://en.cppreference.com/w/cpp/chrono/c/strftime>`_ for ``std::tm`` and
-calendaric component such as `'d'` are valid only for ``std::tm`` and not
+in `Meaning of conversion specifiers <https://eel.is/c++draft/time.format>`
-durations or time points.
+for chrono durations and time points. Specifiers that have a calendaric
+component such as `'d'` are valid only for ``std::tm`` and not durations or time
+points.
 
 .. _formatexamples: